Just found this. No rib fractures by any imaging study:
Middlebrooks is day-to-day
Permalink|Comments (0)Posted by Peter Abraham, Globe Staff May 8, 2013 02:47 PM
By Peter Abraham, Globe Staff
In his weekly interview with WEEI this afternoon, Red Sox manager John Farrell said third baseman Will Middlebrooks does not have any rib fractures and is day to day.
Middlebrooks is not in the lineup this evening.
Catcher David Ross, who bruised his quad, also is day-to-day. Middlebrooks and Ross collided chasing a foul ball Tuesday night.
No roster moves are imminent, Farrell said.